M.P.H.

Hebrew theology was divided into three distinct parts. The first was the law, the second was the soul of the law, and the third was the soul of the soul of the law. The law was taught to all the children of Israel; the Mishna, or the soul of the law, was revealed to the Rabbins and teachers; but the Qabbalah, the soul of the soul of the law, was cunningly concealed, and only the highest initiates among the Jews were instructed in its secret principles.

Manley P. Hall